更改所有导航栏中的标题文本颜色和字体

问题描述

我正在使用 swift 2 和最新版本的 Xcode，我正在尝试更改每个导航栏中标题文本的字体大小、名称和颜色.我在 didFinishLaunchingWithOptions 区域的 AppDelegate 部分中编写了以下代码，但它仅更改颜色，不影响字体的大小或类型.当我摆脱颜色线时，标题将跟随 NSFontAttributeName 线.有没有办法让两行代码都执行?我还没有找到任何可以让你在代码中同时更改的东西...

I am using swift 2 and the newest version of Xcode and I am trying to change the font size, name, and color of the Title Text in every Navigation Bar. I wrote the following code in my AppDelegate section in the didFinishLaunchingWithOptions area but it only changes the color, the size or type of font is not affected. When I get rid of the color line, then the title follows the NSFontAttributeName line. Is there a way to have both lines of code perform? I haven't found anything that allows you to change both in code...

   func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        // Override point for customization after application launch.


        UIApplication.sharedApplication().statusBarStyle = .LightContent
        UINavigationBar.appearance().titleTextAttributes = [NSFontAttributeName: (UIFont(name: "AvenirNext-DemiBold", size: 50.0))!]
        UINavigationBar.appearance().titleTextAttributes = [NSForegroundColorAttributeName : UIColor(red: 244/255, green: 234/255, blue: 166/255, alpha: 1.0)]


        return true
    }

推荐答案

你的代码很傻.您设置了 titleTextAttributes，然后丢弃刚刚设置的值并替换另一个值！

Your code is silly. You set the titleTextAttributes and then you throw away the value you just set and replace it with another value!

UINavigationBar.appearance().titleTextAttributes = 
    [NSFontAttributeName: (UIFont(name: "AvenirNext-DemiBold", size: 50.0))!]
UINavigationBar.appearance().titleTextAttributes = 
    [NSForegroundColorAttributeName : UIColor(red: 244/255, green: 234/255, blue: 166/255, alpha: 1.0)]

如果您不想这样做，请将 titleTextAttributes 设置为仅 one 值，即由 both 设置组成的字典:

If that's not what you want to do, set the titleTextAttributes to just one value, i.e. a dictionary consisting of both settings:

UINavigationBar.appearance().titleTextAttributes = [
    NSFontAttributeName: (UIFont(name: "AvenirNext-DemiBold", size: 50.0))!,
    NSForegroundColorAttributeName : UIColor(red: 244/255, green: 234/255, blue: 166/255, alpha: 1.0)
]

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